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  • 1
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    Structural organization of the rat acyl-peptide hydrolase gene (1989)
    Oxford University Press
    Details
    Publication Date: 1989-01-01
    Print ISSN: 0305-1048
    Electronic ISSN: 1362-4962
    Topics: Biology
    Published by Oxford University Press
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    PAPER CURRENT
  • 2
    Electronic Resource
    Electronic Resource
    Activation of carbon monoxide on nickel-aluminum alloy surfaces and by interstitial trapping in a nickel matrix. Structure and electronic factors from molecular orbital theory (1990)
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 94 (1990), S. 1607-1611 
    Details
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/j100367a071
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  • 3
    Electronic Resource
    Electronic Resource
    Film Sm–Co permanent magnets for the biasing of thin permalloy strips : 37th Annual conference on magnetism and magnetic materials (1993)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 73 (1993), S. 5926-5928 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Highly textured Sm–Co-based permanent magnet films which exhibit in-plane anisotropy, with thicknesses ranging from 500 A(ring) to several microns, have been synthesized on polycrystalline Al2O3 substrates. The textured Sm–Co-based films of the disordered TbCu7-type structure were directly crystallized by sputter deposition onto heated substrates. Remanent inductions BR were ≈8 kG, and the intrinsic coercivities, iHc, ranged from 4–10 kOe. The crystallite grain size as a function of film thickness was determined. The use of these films in small scale geometry devices was tested in a sandwich configuration of strips of areal size 7×1 mm2. The Sm–Co films were used to bias Ni81.5Fe18.5 permalloy films. The sandwich permanent magnet was magnetized across its width. The permalloy films were sputter synthesized under conditions very similar to those of the permanent magnet films. Substrate biasing was not used for either the permanent magnet or the permalloy strips. The permalloy films exhibited a well-defined easy axis along the length of the strip. Unbiased, the permalloy showed a maximum magnetoresistance MRmax of 3.0%. On biasing with a 25-μm-thick permanent magnet film with a spacer thickness of 25 μm, the longitudinal biasing field value at MR/MRmax=0.5 was more than a 100 Oe, indicating an average biasing field of the same value.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.353523
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  • 4
    Electronic Resource
    Electronic Resource
    Electrical resistivity of Co-Ni-Pd and Co-Pd alloys : The 5th Joint MMM−Intermag Conference (1991)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 70 (1991), S. 5831-5833 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Three series of ferromagnetic alloys have been made: Co100−xPdx, Co25Ni75−yPdy and Co5−zNizPd95. The electrical resistivity ρ of these alloys was measured from 4 to 300 K. Their high field (H(approximately-greater-than)2 T) susceptibility χHF was obtained with superconducting quantum interference device measurements at 5 K. Comparing the residual resistivity ρ0 of Co-Ni and Co-Pd, it is found that the spin-up resistivity ρ↑ of Co-Ni follows the Nordheim's rule, while that of Co-Pd peaks at x=85. This indicates the spin-up d band of Co-Pd is not full for all the x values. Also, χHF data reveal the same tendency of the spin-up band. Based on the deviation from Matthiessen's rule of the two-current model, we estimate α=ρ0↓ /ρ0↑(approximately-equal-to)2 for the dilute PdCo alloy, where ρ0=ρ0↓ ρ0↑/(ρ0↑+ρ0↓ ), from the residual resistivity of the ternary Co5−zNizPd95 alloy and from the temperature dependence of ρ(T) of the binary Co5Pd95 alloy
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.350125
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  • 5
    Electronic Resource
    Electronic Resource
    Magnetic and transport properties of Fe-Mo and Fe-W alloys : 37th Annual conference on magnetism and magnetic materials (1993)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 73 (1993), S. 6402-6404 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Two series of polycrystalline Fe100−xMox and Fe100−xWx (0≤x≤10 at. %) alloys were made. In order to preserve a single bcc phase, alloy samples, depending on the x value, were quenched from various temperatures TQ. In general, TQ is higher than 850 °C, and increases with x. X-ray diffraction was used to check the phase and the lattice constant of each sample. Magnetoresistance, electrical resistivity, and magnetic moment were measured at 4 K. Those experimental data are analyzed for Fe-Cr, Fe-Mo, and Fe-W alloys, especially the effects of moving down along the VIB column from Cr to W on the transport and magnetic properties. Comparison is made with Co-based alloys, where the changes of the spin-up resistivity from Co-Ni to Co-Pd and from Co-Pd to Co-Pt are due to the increase in s-s scattering. For Fe-based alloys, however, because the spin-down d band is partially empty (the roles of spin-up and -down bands are reversed), the spin-down resistivity is from s-d scattering instead.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.352610
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  • 6
    Electronic Resource
    Electronic Resource
    Magnetization and transport properties of Co-Ni-Pd alloys : 35th Annual conference on magnetism and magnetic materials (1991)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 69 (1991), S. 4674-4676 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A series of Co15(NixPd1−x)85, Co25(NixPd1−x)75, and Co35(NixPd1−x)65 alloys was made. Different thermal treatments were performed on these alloys: (1) furnance cooling from 1000 °C with −3 to −5 °C/min, (2) annealing at 750 °C in high vacuum for 23 h, and (3) salt water quenching from 800 and 900 °C, respectively. Properties measured include magnetization, electrical resistivity, magnetoresistance, and lattice constant. An order-disorder transformation is suggested indirectly in CoNi3 by some changes in the measured properties for samples subjected to different thermal treatments. All the changes observed are explained from the viewpoints of order-disorder transformation, textural structures, impurities, and other phenomena. The physical effect of replacing Ni by Pd is discussed briefly.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.348294
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  • 7
    Electronic Resource
    Electronic Resource
    Magnetic properties of FeAlMnC steels (1990)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 67 (1990), S. 4835-4837 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A series of high yielding strength (90–180 ksi) and high-elongation (30%–45%) FeAlMnC steels have been made. The magnetic, microstructural, and thermal expansion properties of these steels have been studied. Basically, their magnetic transitions on cooling can be classified into three groups according to their microstructures: (i) For fully austenitic (γ) steels, the transition is from paramagnetic to antiferromagnetic. TN is lowered with the addition of Al; (ii) for α+γ phase steel (volume fraction of α≤0.3%), the transition is from superparamagnetic to antiferromagnetic, and (iii) for the mixed phase steel, whose α phase has percolated, it is ferromagnetic with TC(approximately-equal-to)200 C. The susceptibility of austenitic steels is low. Their nonmagnetic properties are comparable to commercial 304 or 25/12 stainless steel. An Invar-like property in the thermal expansion was observed around TN. Their volume magnetostriction values are in the range of 10−6–10−5.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.346053
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  • 8
    Electronic Resource
    Electronic Resource
    Different types of anisotropy in amorphous SmCo films : 37th Annual conference on magnetism and magnetic materials (1993)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 73 (1993), S. 5923-5925 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Amorphous SmCo films were sputter synthesized at room temperature in the presence of strong in-plane magnetic fields. Both in-the-film-plane and perpendicular anisotropy could be formed in the films depending upon the film preparation conditions. Post deposition annealing in the presence of in-plane magnetic fields directed perpendicular to the original field direction were performed to distinguish the behaviors of the various types of anisotropies. The physical origin of in-the-film-plane anisotropy can be explained as directional pair ordering. Perpendicular anisotropy was only formed in films synthesized through thermalized sputtering and was caused by growth induced structure. If formed, the microcrystallites also have large contributions to the anisotropy with their easy axes in the film plane, but without any preferred direction in the film plane. Both the formation of growth induced structure, which caused the perpendicular anisotropy, and the formation of microcrystallites, prevented the formation of the pair ordering, which decreased the in-the-film-plane anisotropy.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.353522
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  • 9
    Electronic Resource
    Electronic Resource
    Critical behavior of amorphous Fe80−xMxB14Si6 alloys with M=Mo, V, Mn, and 2≤x≤14 (1990)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 67 (1990), S. 5439-5441 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Amorphous Fe80−xMxB14Si6 alloys with M=Mo, V, Mn, and 2≤x≤14 have been made by the rapid quenching method. The critical exponents β, γ, δ, and Tc were determined by two independent methods: the method of Kouvel-Fisher and the scaling plot. With the addition of M, β, and γ deviate more from the values predicted by the three-dimensional Heisenberg model, and are closer to the values proposed by Sobotta and Wagner. δ remains less changed. The magnetic inhomogeneity of these alloys is evidenced by the specific heat, the forced magnetoresistance, and the Mössbauer measurements. By increasing x, the peak of specific heat becomes smeared and less divergent, and forced magnetoresistance changes from negative to positive around Tc.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.346103
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  • 10
    Electronic Resource
    Electronic Resource
    Transverse field dependence of the planar Hall effect sensitivity in Permalloy films (2001)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 90 (2001), S. 6297-6301 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A series of Permalloy films, of various shapes such as a square, a rectangle, a circle, and a rhombus, was made. The sample length to width ratio L/w varied from 1 (i.e., square) to 29 (i.e., rectangle). We studied how the planar Hall effect (PHE) signal was affected by adding a transverse field Hy along the easy-axis direction of the sample. It was found that in a certain range of Hy, the PHE sensitivity S might become inoperative, i.e., S changed linearly as a function of Hy from −Smax to +Smax (or vice versa), where Smax was the maximum sensitivity. This phenomenon is explained by considering the Zeeman-energy and the single-domain-rotation effects. In particular, for the square sample, the following data exist: (1) Smax is as high as 310 Ω/T at the film thickness t=500 Å, and (2) the inoperative range for Hy is the narrowest among all the samples. From this study, we conclude that the field of the Earth He—as long as its horizontal component is larger than 0.25 Oe—can be employed to stabilize the magnetic structure of a Permalloy element and to achieve the best PHE performance with Smax. © 2001 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1415052
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